LAMPREYS/HAGFISHES
type: Concept

ANIMALS/VERTEBRATES
type: Concept

FISH
change note: 2017-03-15 13:39:26.0 [mgenazzi] Definition updated update Definition (Fish are, broadly speaking, any poikilothermic (or organism whose body temperature varies according to the temperature of its surroundings) legless, aquatic vertebrate that possesses a series of gills on each side of the ;pharynx, a two-chambered heart, no internal nostrils, and at least a median fin as well as a tail fin.); update Definition (Allaby, M. 1998. A Dictionary of Ecology. Oxford University Press. Oxford, New York. );
in scheme: sciencekeywords
definition: Fish are, broadly speaking, any poikilothermic (or organism whose body temperature varies according to the temperature of its surroundings) legless, aquatic vertebrate that possesses a series of gills on each side of the ;pharynx, a two-chambered heart, no internal nostrils, and at least a median fin as well as a tail fin.
type: Concept

SHARKS/RAYS/CHIMAERAS
type: Concept

RAY-FINNED FISHES
type: Concept